Lubricating grease filling device suitable for working in anti-explosion environment

Abstract

The utility model discloses a lubricating grease filling device suitable for working in an anti-explosion environment, and relates to the field of lubricating grease filling tools, the lubricating grease filling device comprises a main body base, a pressure plate is arranged in the middle of the upper end face of the main body base, a pump head is arranged at the top of the pressure plate, and one side of the pump head is connected with an anti-explosion electromagnetic valve; an anti-explosion limiting switch is arranged on the side, located on the pump head, of the anti-explosion electromagnetic valve; an anti-explosion junction box used for controlling starting of the filling device and monitoring the number of working strokes is arranged at the position, located on one side of the pump head, of the bottom of the anti-explosion electromagnetic valve, the anti-explosion junction box is connected with the pressing disc, the limiting switch and the proximity switch through a circuit, and a second connecting support is fixedly arranged on one side of the bottom of the pump head. An anti-explosion proximity switch is fixedly arranged on the side, away from the pump head, of the second connecting support. The isolated explosion-proof junction box is arranged on the electric appliance interface, pressure relief of gas of the pump head is controlled, and the liquid level is monitored in real time, so that the explosion fire problem caused by electric sparks or high temperature is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of lubricating grease filling tools, in particular to a lubricating grease filling device suitable for working in an explosion-proof environment. BACKGROUND

[0002] Lubricating grease mainly plays a role in reducing mechanical friction and preventing mechanical wear, and also has the effects of preventing metal corrosion and sealing dust. The lubricating grease filling machine is applied in the fields of aircraft, train, automobile, machine tool, engineering machinery maintenance, etc.

[0003] For example, a high-efficiency lubricating grease filling device with publication number CN202121315676.1, which mainly improves the efficiency of filling lubricating grease by reducing the viscosity of lubricating grease and increasing the flowability. However, in the work scenes such as petroleum chemical industry and coal mining which have explosion-proof requirements, there are usually flammable and explosive gases or dust. The electrical components or mechanical friction of the lubricating grease filling device may generate electric sparks or high temperature, thereby causing explosion or fire problems. CONTENT OF THE UTILITY MODEL

[0004] In order to improve the problem that the commonly used lubricating grease filling device cannot provide suitable lubrication for the equipment while working in a corresponding explosion-proof environment, the present application provides a lubricating grease filling device suitable for working in an explosion-proof environment.

[0005] The lubricating grease filling device suitable for working in an explosion-proof environment provided by the present application adopts the following technical scheme:

[0006] The lubricating grease filling device suitable for working in an explosion-proof environment comprises a main body base, a pressure plate is arranged on the middle part of the upper end face of the main body base, a pump head for conveying lubricating grease is arranged on the top of the pressure plate, an explosion-proof electromagnetic valve for controlling the on-off of the gas source is arranged on one side of the pump head, and an explosion-proof limit switch for feeding back the liquid quantity signal is arranged on one side of the pump head.

[0007] An explosion-proof junction box for controlling the starting of the filling device and monitoring the working stroke number is arranged on one side of the pump head at the bottom of the explosion-proof electromagnetic valve, the explosion-proof junction box is connected with the explosion-proof electromagnetic valve, the limit switch and the proximity switch through a circuit, a connecting bracket two is fixed on one side of the bottom of the pump head, and an explosion-proof proximity switch is fixed on the side away from the pump head of the connecting bracket two.

[0008] By adopting the above technical scheme, the explosion-proof junction box is arranged at the interface between the grease pumping body and the electrical appliance, so as to ensure isolation from the outside world and play the explosion-proof function. At the same time, the gas control pressure relief of the pump head and the real-time monitoring of the liquid level of the pump head by the explosion-proof electromagnetic valve are realized, so as to maintain the work in the explosion-proof environment and ensure that the lubricating system provides effective lubrication for the equipment.

[0009] Preferably, the explosion-proof junction box top is fixed with a plurality of explosion-proof glands, and the side surface of the explosion-proof junction box is screw-fixed with a conversion plate near one end of the main base, and the conversion plate is integrally fixed with the main base away from the explosion-proof junction box.

[0010] By adopting the above technical scheme, the explosion-proof junction box is the electrical interface of the grease filling device with the outside world, and the control line in the box is connected to the external control system to monitor whether the lubricating grease in the oil drum reaches the low liquid level state.

[0011] Preferably, the explosion-proof electromagnetic valve is fixed with a gas source device mounting bracket on one side, the gas source device mounting bracket is integrally fixed with the main base, and a cylinder upper hole is formed in the top of the gas source device mounting bracket.

[0012] By adopting the above technical scheme, the cylinder upper hole is formed in the surface of the gas source device mounting bracket to provide an auxiliary fixing point for the installation of the cylinder, thereby improving the overall stability.

[0013] Preferably, the explosion-proof limit switch is fixed with a connecting bracket one at the bottom, the connecting bracket one is fixed with a top bracket at the bottom, the top bracket is integrally fixed with the main base, and the top bracket is screw-fixed with the gas source device mounting bracket on one side of the upper end face.

[0014] By adopting the above technical scheme, the connecting bracket one and the top bracket are integrally connected, so that the explosion-proof limit switch is integrally connected with the main base, and the top bracket is screw-connected with the gas source device mounting bracket, thereby facilitating the disassembly and replacement in the later period.

[0015] Preferably, the explosion-proof limit switch is connected with a signal trigger rod for feeding back a low liquid level signal on one side near the main base.

[0016] By adopting the above technical scheme, the signal trigger rod is fixed on the explosion-proof limit switch, and when the grease in the oil drum reaches the low liquid level, the signal trigger rod presses the yoke, so that the monitoring system can identify the low liquid level information of the grease filling device.

[0017] Preferably, the main base is fixed with a pressure plate sealing ring around the middle of the upper end face, the main base is fixed with two pull rods for fixing the pressure plate on the upper end face, and the two pull rods are respectively fixed with the top bracket and connected with the pressure plate.

[0018] By adopting the above technical scheme, the pressure plate sealing ring is movably connected with the pressure plate, and the pressure plate is fixed with the main base in the transverse direction through the connection with the pull rod, so that the pressure plate can press the oil as the oil supply of the pump.

[0019] Preferably, the two pull rods are fixed with a hoop around the periphery for fixing the oil drum.

[0020] By adopting the technical scheme, the installation of the hoop provides a connecting fulcrum for the fixing of the conversion plate, and the tightening of the hoop fixes the oil drum.

[0021] Preferably, the connecting end of the pressure plate is connected with an oil outlet valve block in the middle pipeline, the explosion-proof electromagnetic valve is threadedly provided with a fastener for fixing connection between the installation support of the gas source device, the conversion plate and the hoop, the connecting support one and the top support, and the explosion-proof proximity switch and the connecting support two.

[0022] By adopting the technical scheme, the oil outlet valve block controls the opening and closing of the release of the lubricating grease in the pump head, and the fastener fixes the explosion-proof electromagnetic valve and the explosion-proof proximity switch, thereby improving the overall stability of the device.

[0023] In summary, the present application has at least one of the following beneficial technical effects:

[0024] 1. The explosion-proof wiring box is arranged at the interface between the liposuction pump body and the electric appliance, which ensures isolation from the outside, and the explosion-proof electromagnetic valve controls the on-off of the gas source of the pump head, thereby ensuring the normality and performance of the device in an explosion-proof environment, and the explosion-proof limit switch monitors the liquid level of the pump head in real time, which can control the start and stop of the grease filling device, so as to provide effective lubrication for the equipment by the lubrication system. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a perspective view of the present application;

[0026] Figure 2 It is a front view of the present application;

[0027] Figure 3 It is a connection diagram of the explosion-proof wiring box of the present application;

[0028] Figure 4 It is a connection diagram of the explosion-proof electromagnetic valve of the present application;

[0029] Figure 5 It is an explosion diagram of the installation of the explosion-proof limit switch of the present application;

[0030] Figure 6 It is an enlarged view of A of the present application.

[0031] Reference signs: 1, main body base; 2, pressure plate sealing ring; 3, pressure plate; 4, hoop; 5, pull rod; 6, explosion-proof wiring box; 61, explosion-proof gland; 62, conversion plate;

[0032] 7, explosion-proof electromagnetic valve; 8, top support;

[0033] 9, explosion-proof limit switch; 91, signal trigger rod; 92, connecting support one;

[0034] 10, pump head; 11, oil outlet valve block; 12, fastener; 13, air source device mounting bracket; 14, upper hole position of air cylinder; 15, explosion-proof proximity switch; 16, connecting bracket two; 17, air cylinder. DETAILED DESCRIPTION

[0035] The following will be described in detail below Figures 1-6 The application is further described in detail.

[0036] The application discloses a lubricating grease filling device suitable for working in an explosion-proof environment.

[0037] Referring to Figures 1-3 A lubricating grease filling device suitable for working in an explosion-proof environment comprises a main base 1, two pull rods 5 are fixed on the upper end surface of the main base 1 in a transverse screw manner, the top of each of the two pull rods 5 is connected with a cross beam through a thread, forming integral fixation, meanwhile, an air cylinder 17 is fixed on the upper end surface of the main base 1 outside the two pull rods 5, a pressure disc sealing ring 2 is fixed between the two piston rods of the air cylinder 17 on the upper end surface of the main base 1, the pressure disc sealing ring 2 is sleeved on a pressure disc 3, the pressure disc 3 is fixed with the two pull rods 5 through a thread, the pressure disc 3 is fixed at the center position of the upper end surface of the main base 1, the outer surface of the pressure disc 3 is fixed with the pressure disc sealing ring 2, meanwhile, the pressure disc 3 is connected with the piston rods of the integral air cylinder 17, thereby forming synchronous movement.

[0038] A hoop 4 is arranged around the position between the middle portions of the two pull rods 5, the hoop 4 is in a U shape, an oil drum is fixed by being bound in the hoop 4, metal plate pieces are screw-connected to the surfaces of the two pull rods 5 at both ends of the hoop 4, the two metal plate pieces are fixed with the two cylinder bodies of the air cylinder 17 through sleeve connection, one end of one of the metal plate pieces away from the hoop 4 is screw-connected with a fastener 12, one end of the fastener 12 away from the metal plate piece is fixedly connected with a conversion plate 62, the conversion plate 62 is fixed with an explosion-proof junction box 6 at one end away from the fastener 12, the explosion-proof junction box 6 is connected with each cable connection inside and outside the grease filling device, explosion-proof gland nuts 61 are installed at the cable interfaces, ensuring isolation from the outside and playing a function of explosion-proof.

[0039] It should be noted that the top of the pressure disc 3 is provided with an oil discharge screw rod which can be manually pulled, the oil discharge screw rod is connected with the oil drum cavity, the oil in the oil drum is released by rotating the oil discharge screw rod, thereby preventing gas accumulation in the oil drum, meanwhile, tightening belts are wound around the two ends of the U-shaped hoop 4, a pulling force is formed on the two ends of the U-shaped hoop 4 by tightening the tightening belts, thereby fixing the oil drum in the hoop 4.

[0040] Referring to Figure 4 , Figure 5 , Figure 6The top of the pressure plate 3 is provided with a pump head 10, the pump head 10 is communicated with the oil drum through a pipeline, and the two ends of the bottom of the pump head 10 are fixedly connected with the two inner pull rods 5 through mounting plates to form stability, a connecting bracket two 16 is fixedly connected between the bottom of the pump head 10 and the mounting plate through a fastener 12, an explosion-proof proximity switch 15 is fixedly arranged at the end of the connecting bracket two 16 away from the fastener 12, an interface is arranged at the pipeline connection port of the pump head 10 and the oil drum, an oil outlet valve block 11 is arranged at the interface through a pipeline connection, the oil outlet valve block 11 is fixedly arranged on the surface of one pull rod 5 on the outside, and the rotation of the rotating rod on the surface of the oil outlet valve block 11 can open and close the oil supply of the pump head 10.

[0041] The top of the surface of the two piston rods of the cylinder 17 is screw-fixed with a top bracket 8, the top bracket 8 is annularly arranged around the pull rod 5, an air source device mounting bracket 13 is fixedly arranged on one end of the side surface of the top bracket 8 through a fastener 12, the air source device mounting bracket 13 is in surface contact with the outer surface of the top bracket 8, an explosion-proof electromagnetic valve 7 is fixedly arranged on the side surface of the air source device mounting bracket 13 away from the top bracket 8, and a cylinder upper hole 14 is arranged on the upper end surface of the air source device mounting bracket 13 to provide an installation fulcrum for the cylinder 17, so that the cylinder 17 is fixedly arranged on the two sides of the pull rod 5.

[0042] It should be noted that the upper end surface of the top bracket 8 is fixedly arranged with a connecting bracket one 92 on the side of the explosion-proof electromagnetic valve 7, the side surface of the connecting bracket one 92 is fixedly arranged with an explosion-proof limit switch 9, the surface of the explosion-proof limit switch 9 is provided with a signal trigger rod 91 which can trigger a limit switch signal, and the explosion-proof junction box 6 contains a signal line introduced by the explosion-proof limit switch 9, an on-off control line introduced by the explosion-proof electromagnetic valve 7 and a proximity switch signal line introduced by the explosion-proof proximity switch 15.

[0043] The implementation principle of the grease filling device suitable for working in an explosion-proof environment is as follows: when the device is used, a person starts the pump head 10 to run through a control system, so that the grease in the oil drum is extracted and delivered to the oil outlet valve block 11 through a pipeline, and the grease is discharged to a lubrication point by opening and closing the oil outlet valve block 11, and in the delivery process, the on-off control line of the explosion-proof electromagnetic valve 7 is connected with the explosion-proof junction box 6, so that the explosion-proof electromagnetic valve 7 is controlled by the explosion-proof junction box 6, and the on-off state of the explosion-proof electromagnetic valve 7 is adjusted in real time.

[0044] The explosion-proof proximity switch 15 arranged on one side of the pump head 10 senses the action signal of the pump rod, and in the use process of the grease filling device, when the grease in the oil drum reaches a low liquid level, the signal trigger rod 91 is swung to transmit a signal to the explosion-proof limit switch 9, and the signal line introduced by the explosion-proof limit switch 9 is connected with the explosion-proof junction box 6, so that the monitoring system can recognize the low liquid level information of the grease filling device.

[0045] At the same time, when the pump head 10 is running, the anti-explosion proximity switch 15 can be triggered once per stroke of the pump head 10, and the anti-explosion proximity switch 15 transmits signals to the anti-explosion junction box 6 through the proximity switch signal line, and the monitoring system sends a counting signal, so that the working state of the lubricating grease filling device can be detected in real time, the overall power connection circuit of the lubricating grease filling device is protected and isolated by the anti-explosion junction box 6, and contact with the outside is avoided, and meanwhile, the anti-explosion limit switch 9 is used for monitoring the oil level state, so that it is ensured that the lubricating grease filling device can run in an anti-explosion environment, and whether the liquid level in the oil drum is normal is monitored.

[0046] The above is only an optional embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A lubricating grease filling device suitable for use in an explosion- proof environment, characterized in that: The utility model relates to a grease filling device, including main body base (1), the middle part of main body base (1) upper end surface is provided with the pressure plate (3), the top of pressure plate (3) is provided with the pump head (10) for conveying lubricating grease, one side of pump head (10) is connected with the anti -explosion solenoid valve (7) for controlling air source on -off, anti -explosion solen enoid valve (7) is located one side of pump head (10) is provided with the anti -explosion limit switch (9) for feedback liquid volume signal, The bottom of anti -explosion solenoid valve (7) is located one side of pump head (10) is provided with the anti -explosion terminal box (6) for controlling the starting of filling device, monitoring work stroke number, anti -explosion terminal box (6) is connected with anti -explosion solenoid valve (7), limit switch and proximity switch through circuit, the bottom one side of pump head (10) is fixed with the connecting support no.

2. A lubricating grease filling device suitable for use in an explosion- proof environment according to claim 1, characterized in that: The top of anti -explosion terminal box (6) is fixed with a plurality of anti -explosion gran head (61), the end screw of anti -explosion terminal box (6) side surface close to main body base (1) is fixed with conversion plate (62), the end away from anti -explosion terminal box (6) of conversion plate (62) is integrally fixed with main body base (1).

3. A lubricating grease filling device suitable for use in an explosion- proof environment according to claim 2, characterized in that: One side of anti -explosion solenoid valve (7) is fixed with air source device installation support (13), air source device installation support (13) is integrally fixed with main body base (1), the top of air source device installation support (13) is provided with cylinder upper hole (14).

4. A lubricating grease filling device suitable for use in an explosion- proof environment according to claim 3, characterized in that: The bottom of anti -explosion limit switch (9) is fixed with connecting support no.

5. A lubricating grease filling device suitable for use in an explosion- proof environment according to claim 4, characterised in that: The side close to main body base (1) of anti -explosion limit switch (9) is connected with signal trigger rod (91) for feedback low liquid level signal.

6. A lubricating grease filling device suitable for use in an explosion- proof environment according to claim 5, characterized in that: The middle part of main body base (1) upper end surface is fixed with pressure plate sealing ring (2) around pressure plate (3), the upper end of main body base (1) is fixed with two pull rods (5) for connecting pressure plate (3), two pull rods (5) are fixed with top support (8) and connected with pressure plate (3) respectively, 7. A lubricating grease filling device suitable for use in an explosion- proof environment according to claim 6, characterized in that: The outer periphery of two pull rods (5) is fixed with hoop (4) for fixing oil drum.

8. A lubricating grease filling device suitable for use in an explosion- proof environment according to claim 7, characterised in that: The middle part of the connecting end of pressure plate (3) and pump head (10) is connected with oil outlet valve block (11), and fasteners (12) are threadedly arranged between the anti -explosion solenoid valve (7), the air source device installation support (13), the conversion plate (62), the hoop (4), the connecting support no.

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